affs: rename local toupper() to fn() to avoid confusion

A compiler may see the collision with the toupper() defined in ctype.h:

 fs/affs/namei.c:159:19: warning: unused variable 'toupper' [-Wunused-variable]
   159 |         toupper_t toupper = affs_get_toupper(sb);

To prevent this from happening, rename toupper local variable to fn.

Initially this had been introduced by 24579a881513 ("v2.4.3.5 -> v2.4.3.6")
in the history.git by history group.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/affs/namei.c b/fs/affs/namei.c
index d12ccfd..2fe4a58 100644 (file)
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -43,7 +43,7 @@ affs_get_toupper(struct super_block *sb)
  * Note: the dentry argument is the parent dentry.
  */
 static inline int
-__affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr, toupper_t toupper, bool notruncate)
+__affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr, toupper_t fn, bool notruncate)
 {
        const u8 *name = qstr->name;
        unsigned long hash;
@@ -57,7 +57,7 @@ __affs_hash_dentry(const struct dentry *dentry, struct qstr *qstr, toupper_t tou
        hash = init_name_hash(dentry);
        len = min(qstr->len, AFFSNAMEMAX);
        for (; len > 0; name++, len--)
-               hash = partial_name_hash(toupper(*name), hash);
+               hash = partial_name_hash(fn(*name), hash);
        qstr->hash = end_name_hash(hash);
 
        return 0;
@@ -80,7 +80,7 @@ affs_intl_hash_dentry(const struct dentry *dentry, struct qstr *qstr)
 }
 
 static inline int __affs_compare_dentry(unsigned int len,
-               const char *str, const struct qstr *name, toupper_t toupper,
+               const char *str, const struct qstr *name, toupper_t fn,
                bool notruncate)
 {
        const u8 *aname = str;
@@ -106,7 +106,7 @@ static inline int __affs_compare_dentry(unsigned int len,
                return 1;
 
        for (; len > 0; len--)
-               if (toupper(*aname++) != toupper(*bname++))
+               if (fn(*aname++) != fn(*bname++))
                        return 1;
 
        return 0;
@@ -135,7 +135,7 @@ affs_intl_compare_dentry(const struct dentry *dentry,
  */
 
 static inline int
-affs_match(struct dentry *dentry, const u8 *name2, toupper_t toupper)
+affs_match(struct dentry *dentry, const u8 *name2, toupper_t fn)
 {
        const u8 *name = dentry->d_name.name;
        int len = dentry->d_name.len;
@@ -148,7 +148,7 @@ affs_match(struct dentry *dentry, const u8 *name2, toupper_t toupper)
                return 0;
 
        for (name2++; len > 0; len--)
-               if (toupper(*name++) != toupper(*name2++))
+               if (fn(*name++) != fn(*name2++))
                        return 0;
        return 1;
 }
@@ -156,12 +156,12 @@ affs_match(struct dentry *dentry, const u8 *name2, toupper_t toupper)
 int
 affs_hash_name(struct super_block *sb, const u8 *name, unsigned int len)
 {
-       toupper_t toupper = affs_get_toupper(sb);
+       toupper_t fn = affs_get_toupper(sb);
        u32 hash;
 
        hash = len = min(len, AFFSNAMEMAX);
        for (; len > 0; len--)
-               hash = (hash * 13 + toupper(*name++)) & 0x7ff;
+               hash = (hash * 13 + fn(*name++)) & 0x7ff;
 
        return hash % AFFS_SB(sb)->s_hashsize;
 }
@@ -171,7 +171,7 @@ affs_find_entry(struct inode *dir, struct dentry *dentry)
 {
        struct super_block *sb = dir->i_sb;
        struct buffer_head *bh;
-       toupper_t toupper = affs_get_toupper(sb);
+       toupper_t fn = affs_get_toupper(sb);
        u32 key;
 
        pr_debug("%s(\"%pd\")\n", __func__, dentry);
@@ -189,7 +189,7 @@ affs_find_entry(struct inode *dir, struct dentry *dentry)
                bh = affs_bread(sb, key);
                if (!bh)
                        return ERR_PTR(-EIO);
-               if (affs_match(dentry, AFFS_TAIL(sb, bh)->name, toupper))
+               if (affs_match(dentry, AFFS_TAIL(sb, bh)->name, fn))
                        return bh;
                key = be32_to_cpu(AFFS_TAIL(sb, bh)->hash_chain);
        }